Other types of respiration
1. Cutaneous respiration: e.g.: Protura, Collembola and endoparasitic insects.
2. Tracheal gills: e.g.: larva of Trichoptera, nymphs of Ephemeroptera.
3. Spiracular gills: In some aquatic pupae.
4. Blood gills: . In chironomid larva of Diptera.
5. Rectal gills: In dragonfly nymphs (naids).
6. Air sacs: In many winged insects.